57results about How to "Fully exposed" patented technology

This invention discloses a magnetic solid-phase extraction method for detecting trace amounts of glucocorticoids in hydrophilic media, belonging to the field of sample pretreatment and chromatographic analysis technology. The method includes: adjusting the pH of a hydrophilic medium sample containing glucocorticoids and adding an ionic strength modifier to obtain a pretreated sample; mixing a magnetic covalent organic framework-based composite nanomaterial with the pretreated sample and performing oscillatory extraction under a dynamic gradient magnetic field to adsorb the glucocorticoids onto the material surface; separating the material adsorbed with glucocorticoids using an external magnetic field and discarding the supernatant; performing ultrasonic-assisted elution of the material using an elution solvent and collecting the eluent; and detecting the eluent using high-performance liquid chromatography-diode array detector (HPLC-DID) and calculating the glucocorticoid concentration based on a standard curve.

This invention relates to the field of resistance furnace technology, specifically a box-type resistance furnace for diesel fuel ash content testing. It includes a furnace body and a furnace door mounted on the furnace body. A covered ash dish is placed inside the furnace body. The device also includes a two-stage locking mechanism on both the furnace body and the furnace door. This mechanism locks the furnace door with a slight gap before fully closing it. By using the two-stage locking mechanism, the furnace door is first locked in a gap-free state to allow gas to escape and prevent pressure buildup, and then locked in a fully closed state to ensure airtightness and improve testing accuracy. Furthermore, under the action of a linkage mechanism, closing the furnace door causes the deflector tray and covered ash dish to rotate into the furnace, reducing manual interference. When the furnace door is fully closed, the covered ash dish is automatically opened, fully exposing the sample and ensuring reliable and standardized testing. The entire process involves few steps and is simple and convenient.

A high-load cobalt-based single-atom catalyst for oxygen reduction and its preparation method are disclosed, belonging to the field of electrocatalysis technology. This method utilizes the cage structure in ZnCo-ZIF to encapsulate nitrogen-rich metal molecules, followed by high-temperature carbonization under nitrogen conditions to obtain the catalyst. Benefiting from the separating effect of Zn metal nodes in ZIF and the spatial confinement effect of the ZIF cages, as well as the high nitrogen content in the guest molecule, a cobalt-based single-atom catalyst with a loading of 4.0 wt% was prepared. Furthermore, compared to traditional preparation methods, the catalyst prepared using a mixed solvent exhibits a small particle size, resulting in a high specific surface area that fully exposes the active sites. The large specific surface area allows for the full exposure of the high-load metal atom active sites, thus demonstrating excellent performance in the oxygen reduction reaction, with a half-wave potential of 0.88 V and a limiting current density of 6.0 mA·cm⁻¹ in 0.1 M KOH electrolyte. ‑2 .

The utility model provides a capsicum seed coater with nutrition coating, including shell and install the air intake system at the shell bottom end, the shell is equipped with the diversion pipe and distribution plate in proper order from top to bottom, the distribution plate is provided with a plurality of air holes, is provided with the feeding gap between diversion pipe and the distribution plate, and the feeding gap is provided with the nutrition coating. A material falling area is formed between the flow guide pipe and the shell; a material spraying assembly is mounted on the distribution plate, and the material spraying assembly and the flow guide pipe are coaxially arranged; the shell is provided with a spraying ring assembly, and the spraying ring assembly is arranged above the flow guide pipe; the utility model can solve the problems that when the stirring mechanism in the prior art is used for stirring materials with irregular shapes and lighter particle weights, some areas on the surfaces of the materials can still be in a shielded state for a long time and are difficult to fully expose and effectively contact atomized coating liquid drops.

The invention relates to the technical field of chemical monitoring, in particular to an N-methylaniline impurity online spectrum monitoring device which comprises a bottom rack, a plurality of glass boxes are evenly arranged on the bottom rack in the length direction, the glass boxes sequentially have different deflection angles, and the deflection angle difference values of the adjacent glass boxes are equal; by arranging the multi-angle deflection glass box, static and multi-angle static monitoring of N-methylaniline is realized, spectral characteristics of impurities in different directions can be effectively captured, and slow rotation of the glass box further drives the internal N-methylaniline to change angles, so that a light source can fully irradiate, and the detection accuracy is improved. Impurities possibly hidden due to local gathering are repeatedly exposed in dynamic rotation, a monitoring blind area is eliminated, the comprehensiveness of impurity detection is remarkably enhanced through the steps, and the accuracy of a monitoring result can be greatly improved especially for trace impurities which are not evenly distributed.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

The invention discloses a moxibustion device special for a Taiyi Shen needle and a moxibustion applying method of the moxibustion device, and belongs to the technical field of medical care equipment. Comprising a supporting body, a moxibustion applicator, an expansion mechanism, a positioning body and the like. Through brand new design and combined use of multiple structures and multiple systems of the expansion mechanism, the positioning body, the protector, the positioning system and the monitoring system, multiple functions of moxibustion application, expansion, positioning, protection, monitoring, smoke purification and the like are integrated, comprehensive, automatic and accurate moxibustion application is achieved, the moxibustion efficiency and quality are remarkably improved, and the application range is wide. Clinical difficulties of related medical staff are comprehensively and systematically solved, and comfortable, safe and efficient treatment experience is provided for patients.

The application provides a carbon-based gallium monatomic material for electrocatalytic oxygen reduction synthesis of hydrogen peroxide, the carbon-based gallium monatomic material is composed of carbon atoms, oxygen atoms and gallium atoms, does not contain gallium oxide form, has a Ga-O-C structure, and the three atoms are uniformly distributed; the gallium atoms and the oxygen atoms are bonded in the form of a covalent bond, and the oxygen atoms are bonded with the carbon atoms; the gallium atoms are uniformly dispersed on the carbon-based base material in the form of monatomic atoms. The carbon-based gallium monatomic material provided by the technical scheme of the application is used for electrocatalytic oxygen reduction synthesis of hydrogen peroxide, only C, O and Ga three elements are present in the prepared carbon-based gallium monatomic material, and the three elements are uniformly distributed in the form of monatomic atoms and are free of agglomeration and crystallization, the carbon-based gallium monatomic material has high conductivity of carbon material, overcomes the defects that a homogeneous catalyst is unstable and is prone to agglomeration, and simultaneously, compared with other heterogeneous catalysts in the prior art, the catalytic selectivity has good controllability and the catalytic selectivity is greater than 90%.

This invention provides a water surface photocatalytic oxidant release device, belonging to the field of photocatalytic equipment technology. It includes a main structure with an internal reaction chamber. The chamber has an inlet and an outlet at both ends, respectively, both communicating with the reaction chamber. An oxidant release membrane, a sulfonated polyethersulfone selective permeation membrane with a pore size <1 nm, is located at the outlet. The reaction chamber contains a catalyst support and a light source system. The catalyst support is made of porous ceramic and loaded with a g-C3N4 catalyst. The light source system includes an LED board fixed in the center of the catalyst support and surrounded by it. The LED board has a ring-shaped array of blue LED beads emitting light of a specific wavelength of 450-470 nm. An energy and control compartment is located inside one side wall of the main structure, housing a battery pack and a control unit board. This invention can significantly improve environmental benefits and treatment efficiency, and greatly enhance long-term operational stability and economic efficiency.

This disclosure relates to a drying apparatus, comprising: a drying chamber for accommodating a wafer assembly; a separation mechanism disposed within the drying chamber, the separation mechanism including a separation motion component and a support component, the support component being oriented relative to the bottom opening of a wafer frame to support the wafers, the separation motion component being connected to the wafer frame to drive the wafer frame to move vertically upwards and downwards; a rotation mechanism including a drive assembly and at least one roller, the drive assembly being connected to the roller and being used to drive the roller to move axially and to rotate the roller, the axial direction of the roller being parallel to the axial direction of the wafers; and a control mechanism connected to the drive assembly, used to control the drive assembly to drive the roller to move between the wafers and the wafer frame when the wafer frame descends to a first preset position separated from the wafers, and to control the drive assembly to drive the roller to rotate when the roller contacts the wafers, thereby causing the wafers to rotate. This solution can improve the wafer drying effect.

The utility model relates to a car technical field especially, it is a kind of central hand box refrigeration structure, including central hand box, condenser pipe, semiconductor refrigeration module, shroud and heat dissipation pipeline, wherein, central hand box inside is equipped with refrigeration space;Condenser pipe is embedded in the lateral wall of refrigeration space, and its both ends are communicated with the refrigerant circulation pipeline of car air conditioning system by pipeline;Semiconductor refrigeration module cold end is embedded in the lateral wall of refrigeration space, and hot end is placed in the inside of shroud;Shroud is fixed in the inside of central hand box;One end of heat dissipation pipeline is communicated inside shroud, and the other end is communicated to engine cabin, and exhaust fan is embedded in the inside of heat dissipation pipeline;The utility model proposes a kind of central hand box refrigeration structure, it is additionally equipped with semiconductor refrigeration module as auxiliary cold source, can carry out cold supplement to refrigeration space under the condition that vehicle is temporarily extinguished, effectively inhibits the temperature rise in refrigeration space, and reduces temperature fluctuation, guarantees the continuity and stability of refrigeration effect.

The application discloses a supported catalyst and a preparation method and application thereof, and the raw material of the supported catalyst comprises a ruthenium carbene complex, alkyl aluminum and / or alkyl aluminum oxide, a phosphine-based siloxane compound and a silicon-aluminum type mesoporous molecular sieve; wherein the silicon-aluminum type mesoporous molecular sieve has a silicon-aluminum molar ratio of 25-30, a specific surface area of 550-850 m 2 / g, a relative crystallinity of 90-95%, a pore size of 2.5-3.5 nm and a pore volume of 0.80-1.0 cm 3 / g. The active sites of the supported catalyst are fully exposed, the loading amount of the ruthenium carbene complex is high, the metal ruthenium is not easy to fall off, and the preparation process is simple, so that the supported catalyst can effectively initiate a 1-hexene metathesis reaction.

This invention discloses a highly hydrophilic organic solvent reverse osmosis membrane, its preparation method, and its applications. The organic solvent reverse osmosis membrane comprises a cross-linked polyimide porous support layer, a polyamide separation layer, and a surface grafting layer. The surface grafting layer is formed by the amidation reaction of D-glucosamine with residual acyl chloride groups on the surface of the polyamide separation layer via its primary amino group. This invention utilizes a D-glucosamine / ethanol solution to modify the surface of the nascent polyamide membrane, grafting D-glucosamine through a secondary interfacial reaction to avoid hydrolysis of residual acyl chloride groups, while simultaneously introducing a large number of hydroxyl groups onto the membrane surface. The prepared membrane exhibits significantly enhanced hydrophilicity, greatly increasing the permeation flux of polar organic solvents while maintaining a high solute rejection rate. The preparation method of this invention is simple, low-cost, and easy to scale up, showing broad application prospects in the field of polar organic solvent separation and recovery.

The utility model discloses a calcium carbonate grinder with a scattering structure, which belongs to the technical field of calcium carbonate grinding and comprises a base, a grinding box is arranged on the base, a transmission arm is mounted on the base, a grinding roller is arranged on the transmission arm and positioned in the grinding box, and a grinding disc is arranged in the grinding box. Through the arranged scattering and feeding structure, a scattering motor can be started in the feeding process, the scattering motor drives a scattering cutter to rotate through a rotating shaft, so that fed calcium carbonate is scattered, the calcium carbonate is dispersed into primary particles, soft buffering in the grinding process is reduced, the particles are more fully exposed between a grinding roller and a grinding disc, and the grinding quality of the calcium carbonate is improved. The effective collision frequency in unit time is increased, the grinding efficiency is improved, the supporting assembly is arranged at the tail end of the rotating shaft, the rotating shaft can be supported, the stability of the rotating shaft is guaranteed, the spring is arranged in the fixing rod and used in cooperation with the abutting rod, the abutting rod can effectively make contact with the inner wall of the circular channel, and the supporting effect is guaranteed.

The application provides an energy-saving oven and a control method thereof. The oven comprises a heating mechanism, the heating mechanism comprises two first side plates arranged oppositely, a first top plate arranged at the top end of the two first side plates, two air inlet plates and an air outlet plate forming a transversely extending inner cavity, a plurality of fans and a plurality of lamp tube assemblies, the air inlet plates and the air outlet plate are respectively arranged at the inner side of the first side plates and the first top plate in a spaced manner; the air inlet plates are provided with inwardly inclined first inclined plates at the two ends, the air inlet plates and the first inclined plates are both provided with a plurality of air inlet holes, the hole walls of the air inlet holes extend outwardly and the hole diameters gradually decrease; the air outlet plate comprises a perforated sub-plate provided with a plurality of air outlet holes, two adjacent perforated sub-plates are connected to form a V-shaped structure, the hole walls of the air outlet holes extend inwardly and the hole diameters gradually decrease. The application can effectively reduce the energy consumption of the oven.

The invention discloses a fault processing method and device for a distributed micro-service system, equipment and a medium, relates to the technical field of communication, and aims to solve the problems of low real-time performance and poor precision of fault processing. Transient fault data is injected into the target micro-service group through a chaos injection unit, real-time abnormal data acquisition is performed through a non-intrusive probe, and a transient snapshot is generated; according to the transient snapshots, single-service micro-explosion segments are obtained, the single-service micro-explosion segments are aggregated based on the cross-service overlapping degree, a transient family is generated, index slopes, resource contention traces, log emergence frequencies and topological slices in the transient family are coded into multi-view time sequence vectors, the multi-view time sequence vectors are written into an index database, and the multi-view time sequence vectors are sent to a meta reinforcement learning training queue; in an isolation environment, according to the meta reinforcement learning training queue, performing meta reinforcement learning model training on the high-frequency abrupt change fault scene, and determining a meta strategy according to an instant reward function; and adjusting a chaos injection unit according to the meta-strategy, and carrying out fault processing operation on the distributed micro-service system.

The utility model discloses a pill production raw material mixing device, including mixing bin, and mixing bin assembly connection has the mixing push mechanism, the mixing push mechanism includes a plurality of rotation connection in the mixing bin on the mixing shaft, and all installation a plurality of staggered setting mix structure on the mixing shaft, the mix structure includes fixedly connected on the mixing shaft's support, and the support detachable installation has mix frame, and the mix frame includes curved support part, and the curved support part integrative has a plurality of tooth shape structure on, the mixing push mechanism still includes the drive structure of drive mixing shaft rotation, the top detachable assembly connection of mixing bin has upper dust cover, and the top installation of upper dust cover has the dust extraction cover structure that can turn over open. The above structure realizes the improvement of dry mix, wet mix efficiency in the pill production mixing process, and gives consideration to dust extraction simultaneously.

This invention discloses a hierarchical porous material with catalytic activity, its preparation method, and its application. A photosensitive resin is obtained by stirring and reacting a halogen-containing photopolymerizable ionic liquid monomer, a photopolymerizable monomer, a multifunctional crosslinking agent, a non-reactive porogen, a photoinitiator, and a light absorber. The photosensitive resin is then placed in a 3D printing device to print a preform. The preform is placed in a supercritical drying device, where liquid CO2 is used as the medium for extraction and displacement. Subsequently, the temperature and pressure are increased to above the supercritical point of CO2, and the hierarchical porous material with catalytic activity is obtained through supercritical drying. This invention introduces highly nucleophilic halide ion sites and utilizes photopolymerization 3D printing and polymerization-induced phase separation technology to construct a hierarchical porous material that combines macroscopically customized flow channels with microscopically interconnected pores. This material, as a catalyst, can achieve highly efficient catalysis of the cycloaddition reaction of CO2 and epoxides under mild conditions.

The treatment mechanism comprises a base, a machining table is arranged at the top of the base, and supporting legs are fixedly arranged between the bottom of the machining table and the top of the base; the processing table is sequentially provided with a viscous object pretreatment mechanism used for removing viscous attachments on the surfaces of the plates, a first conveying belt used for conveying the pretreated plates and a crusher used for crushing the pretreated plates from left to right. A second conveying belt used for conveying the crushed materials is arranged at the top of the base and located below the outlet of the crusher, and a tiling mechanism used for tiling the crushed materials is fixedly arranged on the baffle. All links of the whole treatment mechanism are smoothly connected, a complete treatment process is formed from viscous attachment pretreatment, crushing, tiling, magnetic metal removal and non-magnetic metal grading and sorting, and efficient treatment of construction waste and full recovery of resources are achieved.

The invention discloses an oral cavity operation field exposure device, and belongs to the technical field of medical instruments. The invention solves the problem that in the prior art, a novel oral cavity operation field exposure device with an optimized structure and integrated functions is urgently needed to realize non-invasive, stable and all-around operation field presentation. The soft tissue retractor comprises an upper lip block and a lower lip block, the two ends of the upper lip block are connected with the two ends of the lower lip block through two V-shaped pieces respectively, and fixing pieces used for fixing the soft tissue retractor are arranged on the two V-shaped pieces; the dentition spreader comprises a rigid frame, the rigid frame comprises an upper plate and a lower plate, the two ends of the upper plate and the two ends of the lower plate are connected through two connecting rods to form a mouth-shaped structure, the upper plate and the lower plate are both arc-shaped plates, a movable upper jaw supporting plate is arranged on the upper plate, and a jaw support or a jaw pad is detachably connected to the upper jaw supporting plate. A tongue blocking piece is arranged on the lower plate in an up-down sliding mode. The oral cavity surgery field of a patient can be simply, effectively and fully exposed, and the good universality effect is achieved.

This invention discloses a fixation device for acupuncture and moxibustion experiments on the back and abdomen of laboratory mice. It includes an operating table and a head cover for fixing the mouse's head, a baffle for fixing the mouse's neck, and a body cover for fixing the mouse's body, all mounted on the operating table. The body cover includes two detachable arc-shaped inserts, which are arranged opposite each other. The two arc-shaped inserts and the operating table together form a cover for fixing the mouse's body. Each arc-shaped insert includes a fixing part and a sliding part. The fixing part is fixed to the operating table, and the sliding part is slidably disposed on top of the fixing part. An opening is made on the operating table corresponding to the mouse's abdomen, and a sliding baffle is inserted into the opening to fully expose the mouse's abdomen. This invention, while safely and securely fixing the mouse, can fully expose the mouse's abdomen and back, and is particularly suitable for acupuncture and moxibustion experiments on meridians and acupoints such as the Du meridian, Bladder meridian, Ren meridian, and Stomach meridian.

The present application belongs to the cross field of water treatment technology field and waste shrimp shell resource utilization technology field, and specifically relates to a waste shrimp shell derived chitosan-based iron-carbon composite hydrogel as well as a preparation method and application thereof. The present application carries out overall design around the preparation of chitosan and the forming process of network structure, adopts a betaine-acetic acid low eutectic solvent system to extract chitin in waste shrimp shells, and further converts to obtain chitosan. Meanwhile, carbon nanotubes and nano-ferroferric oxide are introduced into the chitosan system to synergistically regulate the material from two aspects of skeleton support and function supplement. The hydrogel microspheres have good antibiotic adsorption and degradation capacity, and have high application prospect in wastewater treatment in industries such as aquaculture, pharmaceuticals and agriculture.

The utility model relates to a kind of full-automatic multi-slot vacuum carbon hydrogen cleaning machine, including rack, multiple for storing the roller of pending cleaning work, respectively set on the feeding unit of rack, ultrasonic degassing cleaning unit, ultrasonic vacuum cleaning unit, at least one vacuum drying unit, discharging unit, handling unit, vacuum unit and distillation recovery system;The feeding unit, ultrasonic degassing cleaning unit, ultrasonic vacuum cleaning unit, vacuum drying unit, discharging unit site are placed in line in turn side by side;The handling unit is used to transfer roller between feeding unit, ultrasonic degassing cleaning unit, ultrasonic vacuum cleaning unit, vacuum drying unit, discharging unit, and can drive roller rotation in transfer process;The utility model is rotated by adopting roller to replace traditional fixed cleaning frame, and is combined with the core design of handling unit in transfer process drive roller rotation, not only realizes dynamic tumbling, completely solves accumulation dead angle, and can significantly improve cleaning and drying efficiency.

The utility model discloses a kind of garbage incineration slag electromagnetic sorting equipment, it is related to slag electromagnetic sorting technical field, and it includes: material conveying assembly, the material conveying assembly includes support frame, and the support frame is equipped with material conveying belt;Electromagnetic sorting mechanism, the electromagnetic sorting mechanism includes rack, and the rack is across on material conveying assembly, and the right part of the rack is equipped with first belt, and the first belt is nested with first de-ironer, and the left part of the rack is equipped with second belt, and the inside of the second belt is nested with second de-ironer, and the upper side middle part of the rack is equipped with multiple stirring assembly, and the rack is equipped with the driving component of driving multiple stirring assembly synchronous rotation. The utility model can effectively separate iron impurities in slag by twice electromagnetic sorting and the auxiliary stirring of stirring assembly, greatly improves the thoroughness of sorting.

The invention provides a potato-tower-shaped nanofiber as well as a preparation method and application thereof, and belongs to the technical field of solid-phase microextraction. The preparation method of the potato-tower-shaped nanofiber comprises the following steps: mixing and dissolving a fiber-forming polymer, an amino precursor, a spinning aid and a solvent I to prepare an electrostatic spinning solution; preparing nanofibers by using an electrostatic spinning technology; the preparation method comprises the following steps: soaking nanofibers in water, and washing and drying after soaking; dissolving an aldehyde group precursor and a template agent into a solvent II to obtain a mixed solution, dipping the nanofiber into the mixed solution, adding a catalyst, and then performing solvothermal reaction to obtain the potato-tower-shaped nanofiber. A large number of uniformly-distributed and orderly-arranged sheet structures are inlaid on the surface of the nanofiber, and the whole fiber is in a potato tower shape; the potato-tower-shaped nanofiber has excellent extraction performance on a micro-plastic loaded plasticizer. The potato-tower-shaped nanofiber disclosed by the invention shows good application potential in the fields of sample pretreatment and solid-phase microextraction.

This invention belongs to the field of workpiece polishing, specifically an automatic polishing device for drum-shaped rollers. It includes a centerless grinder, which contains a grinding wheel for polishing the rollers, a guide wheel for controlling the roller's rotation and feed, and a support plate for supporting the rollers. A spray plate for cooling and lubricating the rollers and grinding wheel is located directly above the support plate inside the centerless grinder. A first cylinder is fixedly mounted on the top of the centerless grinder via a mounting plate. A hanging basket is fixedly connected to the output end of the first cylinder, with an opening on one side facing the support plate. A sliding plate is slidably mounted on the bottom of the hanging basket. A drying cylinder is located on one side of the centerless grinder, with a feed inlet on the side facing the centerless grinder. By setting up the first cylinder and the drying cylinder, the polished rollers can be conveyed and dried, reducing surface moisture and improving the quality of subsequent processing steps such as spraying and assembly.

This invention provides a method for preparing aluminum-iron-carbon micro-electrolysis filler and its application, belonging to the field of wastewater treatment technology. The preparation steps of the aluminum-iron-carbon micro-electrolysis filler are as follows: first, aluminum powder, iron powder, carbon powder, binder, and pore-forming agent are mixed evenly; then water is added to granulate the mixture to prepare a green blank; the green blank is dried in an oven; and then calcined at high temperature under an inert atmosphere to obtain the aluminum-iron-carbon micro-electrolysis filler. This invention utilizes the potential difference between aluminum, iron, and carbon materials to construct a multi-element micro-galvanic cell system, accelerating electron transfer and enhancing reaction kinetics through multi-level potential gradients. The filler has high mechanical strength, well-developed pores, and resistance to caking and passivation. It can maintain micro-electrolysis activity in a wide pH range (2~12) and high-salinity wastewater (salinity 0~70 g / L), effectively removing various organic and inorganic pollutants. Furthermore, the preparation process is simple, cost-controllable, and suitable for industrial production.

This invention discloses a cubic Ru / Co3O4 catalyst, its preparation method, and its applications, belonging to the field of electrode material technology. The method includes the following steps: S1, dissolving cobalt nitrate hexahydrate and hexadecyltrimethylammonium bromide in water, dissolving 2-methylimidazole in water, mixing and stirring to obtain a Co-MOF; S2, calcining the Co-MOF to obtain a Co3O4 cube; S3, dissolving the Co3O4 cube and ruthenium trichloride in water, and performing a hydrothermal reaction to obtain the cubic Ru / Co3O4 catalyst. This invention employs a preparation sequence of "calcination followed by hydrothermal loading," ensuring that Ru species are mainly distributed on the surface of the Co3O4 cube, avoiding Ru species embedding and agglomeration caused by high-temperature calcination. The resulting catalyst has a regular cubic morphology, uniform Ru dispersion, and high catalytic activity, showing broad application prospects in electrocatalytic oxygen evolution and hydrogen evolution.

The present application relates to a kind of for collecting dead pig inguinal lymph node tissue sampling device, including at least one first distraction unit, first gripping unit, at least one second distraction unit, second gripping unit, first locking unit, operating unit, sampling unit and at least one second locking unit, its advantages are, using first distraction unit, second distraction unit cooperate first gripping unit, second gripping unit, the hind leg of dead pig is opened sufficiently to expose the position of groin, provide stable clear puncture field for lymph node sampling;Sampling unit is rotated in lymph node tissue inside by operating unit, the purity of sample collected is high, and larger volume tissue sample can be collected without multiple puncture;Operating unit is movably connected with second gripping unit, can be supported by the second gripping unit, need not to tightly hold operating unit, only pressurization can be completed puncture, save puncture strength;And only need to replace sampling unit, one person can easily complete sampling to dead pig.

This invention discloses a glaucoma aqueous humor drainage tube implantation and injection device, relating to the field of glaucoma treatment technology. It includes a shell, with a baffle one and a baffle two fixedly connected to the inner wall of the shell. A cylinder is fixedly connected to the inner wall of baffle one and the top surface of baffle two. A drainage component is disposed inside the cylinder, and two sealing blocks are disposed below the cylinder. Body parts are fixedly connected to both sides of the shell, and adhesive patches are disposed below the two body parts. A driving component is disposed inside the shell. It also includes two sets of eye-expanding components, each disposed within one of the two body parts. The two sets of eye-expanding components allow the two adhesive patches to move synchronously with angular trajectory characteristics. Furthermore, it includes two sets of protective components, which allow the two sealing blocks to move in opposite directions. Through the cooperation of the above structures, this invention assists doctors in treating patients and helps patients recover better.